close up of a mini volcanic fumarole surrounded by delicate sulphur crystals

acid area beautiful centimeters close crystalise crystals delicate fragile fumarole fume geological geology geothermal hot hverir hydrogen iceland icelandic krafla lake lava macro mafjall maskaradeg mini mountain myvatn naiexcl natural nature northern pass rhyolite rock small steam sulfide sulfur sulfuric sulphide sulphur sulphuric surrounding valley vapour vent volcanic volcano water yellow